The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1994
Filed:
Apr. 06, 1992
Masahiro Nakayama, Odawara, JP;
Hisaharu Takeuchi, Odawara, JP;
Mamoru Tohchi, Odawara, JP;
Satoshi Numakura, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic disc storage system, in which operation for erasing information otherwise left to remain in succession to data records on a rotatable storage medium during a remaining period of one rotation of the medium is omitted. In response to a command commanding access to the stored data, a table containing the lengths of the stored data is referred to. When it is detected that a record having a storage location commanded to be accessed exceeds the associated stored length of the recorded data, a command error is messaged to a controller of the rotatable storage medium in place of executing the access.